Thank you for viewing. This is a Kenko ZXII PROTECTOR 58mm filter. There is some mold near the filter frame on the glass, but it has never caused any problems with photography. The filter frame is in good condition with no signs of use. This is a high-end filter, but due to the above-mentioned points, it is being sold at a bargain price as a "defective" item. Please understand this before purchasing. Filter diameter: 58mm Filter effect: Lens protection